/*
 * MIT License
 *
 * Copyright (c) 2023 北京凯特伟业科技有限公司
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package com.je.bpm.engine.impl.cmd;

import com.je.bpm.core.model.BpmnModel;
import com.je.bpm.core.model.MultiInstanceLoopCharacteristics;
import com.je.bpm.core.model.task.KaiteCounterSignUserTask;
import com.je.bpm.engine.ActivitiException;
import com.je.bpm.engine.ActivitiIllegalArgumentException;
import com.je.bpm.engine.ActivitiObjectNotFoundException;
import com.je.bpm.engine.delegate.DelegateExecution;
import com.je.bpm.engine.impl.interceptor.Command;
import com.je.bpm.engine.impl.interceptor.CommandContext;
import com.je.bpm.engine.impl.persistence.entity.ExecutionEntity;
import com.je.bpm.engine.impl.persistence.entity.TaskEntity;
import com.je.bpm.engine.impl.util.ProcessDefinitionUtil;
import com.je.bpm.engine.task.Task;

import java.io.Serializable;
import java.util.List;

/**
 * 获取会签人员List
 */
public class GetRootExecutionIdByTaskIdCmd implements Command<String>, Serializable {

    private String taskId;

    public GetRootExecutionIdByTaskIdCmd(String taskId) {
        this.taskId = taskId;
    }

    public String getTaskId() {
        return taskId;
    }

    public void setTaskId(String taskId) {
        this.taskId = taskId;
    }

    public String execute(CommandContext commandContext) {
        if (taskId == null) {
            throw new ActivitiIllegalArgumentException("taskId is null");
        }
        TaskEntity task = commandContext.getTaskEntityManager().findById(taskId);
        if (task == null) {
            throw new ActivitiObjectNotFoundException("Cannot find task with id " + taskId, Task.class);
        }
        if (task.isSuspended()) {
            throw new ActivitiException("");
        }

        String processDefinitionId = task.getProcessDefinitionId();
        BpmnModel bpmnModel = ProcessDefinitionUtil.getBpmnModel(processDefinitionId);
        String taskDefinitionKey = task.getTaskDefinitionKey();
        KaiteCounterSignUserTask miActivityElement = (KaiteCounterSignUserTask) bpmnModel.getFlowElement(taskDefinitionKey);
        MultiInstanceLoopCharacteristics multiInstanceLoopCharacteristics = miActivityElement.getLoopCharacteristics();

        ExecutionEntity miExecution;
        if (!multiInstanceLoopCharacteristics.isSequential()) {
            //prallel 并行多实例行为
            miExecution = (ExecutionEntity) getMultiInstanceRootExecution(task.getExecution());
        } else {
            miExecution = task.getExecution().getParent();
        }
        return miExecution.getId();
    }

    protected DelegateExecution getMultiInstanceRootExecution(DelegateExecution executionEntity) {
        DelegateExecution multiInstanceRootExecution = null;
        DelegateExecution currentExecution = executionEntity;
        while (currentExecution != null && multiInstanceRootExecution == null && currentExecution.getParent() != null) {
            if (currentExecution.isMultiInstanceRoot()) {
                multiInstanceRootExecution = currentExecution;
            } else {
                currentExecution = currentExecution.getParent();
            }
        }
        return multiInstanceRootExecution;
    }

    protected List<String> getListVariable(DelegateExecution execution, String variableName) {
        Object value = execution.getVariable(variableName);
        return (List) (value != null ? value : null);
    }

}
